21: 1969 Pontiac Grand Prix SJ
The Pontiac Grand Prix is sort of the unsung hero of the muscle car era. The SJ was based on the Chevrolet Monte Carlo, and it had that same unique styling. The Grand Prix never sold as well as the Monte Carlo, so the cars from this era are rare, but they pack a lot of power under the hood (via PontiacCV8).
The styling of the Grand Prix SJ was sort of panned for the front nose of the car, but that doesn’t take away from the great performance. You get all the great aspects of the Monte Carlo without the high price tag as the Grand Prix is generally a more affordable option.